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INCOME TAX - Deferred tax assets (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Components of Deferred Tax Assets [Abstract]
Gross deferred tax assets	$ 98,377,000	$ 95,371,000
Valuation allowance	(97,628,000)	(94,446,000)
Deferred tax asset, net of allowance	(749,000)	(925,000)
CONCORD ACQUISITION CORP III
Components of Deferred Tax Assets [Abstract]
Organizational costs/startup expenses	1,223,864	243,656
Federal net operating loss carryforward	0	0
Gross deferred tax assets	1,223,864	243,656
Valuation allowance	(1,223,864)	(243,656)
Deferred tax asset, net of allowance	$ 0	$ 0

X

- Definition

Represents the amount of federal net operating loss.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of organizational cost or startup expenses.

+ References

No definition available.

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- References

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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